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首页> 外文期刊>Energy Conversion & Management >A mathematical model to investigate on the thermal performance of a flat plate solar air collector and its experimental verification
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A mathematical model to investigate on the thermal performance of a flat plate solar air collector and its experimental verification

机译：平板式太阳能集热器热性能的数学模型及其实验验证

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A mathematical model based on numerical finite-difference approach under forced convection mode was presented for the SAC. Airflow channel, absorber plate, glass cover, thermal insulation board and fan power were taken into consideration in this model and analyzed in detail. In order to verify the accuracy of this model, an indoor experimental system was built to study the performance of a double pass flow SAC. The effect of the inlet mass flow rate of the collector on the thermal performance was investigated under various environmental conditions. The outlet air temperature obtained from the theoretical and experimental studies are in reasonable agreement, which supports the validity of the theoretical model. By considering the energy gained and the fan power consumed under real conditions, the optimum mass flow rates were discussed and simulated with different ambient temperature and solar irradiance, which showed that for this flat plate SAC, (m) over dot(opt) equals 0.03 kg/s at I = 400 W/m(2), equals 0.04 kg/s at I = 700 W/m(2), and equals 0.045 kg/s at I = 1000 W/m(2). The results are useful for analyzing and designing new SACs. (C) 2016 Elsevier Ltd. All rights reserved.
机译：提出了一种基于数值有限差分法的强制对流数学模型。该模型考虑了气流通道，吸收板，玻璃罩，隔热板和风扇功率，并进行了详细分析。为了验证该模型的准确性，建立了一个室内实验系统来研究双通流SAC的性能。在各种环境条件下，研究了集热器入口质量流速对热性能的影响。理论研究和实验研究得出的出口空气温度基本吻合，证明了理论模型的正确性。通过考虑实际条件下获得的能量和所消耗的风扇功率，讨论并模拟了在不同环境温度和太阳辐射下的最佳质量流率，这表明对于该平板SAC，点（opt）上的（m）等于0.03在I = 400 W / m（2）时的kg / s，在I = 700 W / m（2）时等于0.04 kg / s，在I = 1000 W / m（2）时等于0.045 kg / s。结果对于分析和设计新的SAC很有用。 （C）2016 Elsevier Ltd.保留所有权利。

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